Annelida and cephalopods have a(n) _____ circulatory system

Fill in the blank(s) with correct word


closed

Biology & Microbiology

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A microbiologist must culture a patient's feces for intestinal pathogens. Which of the following components would likely be present in a selective medium for this purpose?

A. NaCl B. Thioglycolic acid C. Bile salts D. Peptone E. Sheep red blood cells

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__________ results in an early embryo that has three primary tissue layers. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

Anthrax is

A. a zoonosis. B. only seen sporadically in the United States. C. transmitted by contact, inhalation, or ingestion. D. a disease that, in humans, can cause a rapidly fatal toxemia and septicemia. E. All of the choices are correct.

Biology & Microbiology

This British clergyman and economist was one of the first to recognize that the human population

cannot continue to increase indefinitely:a. Malthus b. Gause c. Schoener d. Peterson e. Hastings

Biology & Microbiology